Photo courtesy Motorclassica. American cars have done it. Italian cars, British cars, German cars, French cars, they've all done it. Even Belgian and Spanish cars have done it. But no Australian car has ever won a major concours d'elegance, not even in Oz, at least not until a 1969 Holden HT Monaro GTS took Best of Show at the Australian International Concours d'Elegance last month. "For a Holden of any type to win an International Concours event is certainly unexpected," said Paul Mathers, director of Motorcl